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No. 6|6,995 Patented Ian. 3, I899. F. WANGELIN.

CLOSING DEVICE FOR VALVES OF WATER CISTERNS.

(Application filed June 30, 1897.)

(No Model.)

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W g L UNITED Snares Parana tries.

FRIEDRICH WANGELIN, OF DRESDEN, GERMANY.

CLOSING DEVICE FOR VALVES OF WATER-GISTERNS.

sPEoIFIoATIoN forming part of Letters Patent No. 616,995, dated d'anuary 3, 1899. Application filed Inne 30, 1897. Serial No. 643,023. (No model.)

To all whom it may concern:

Be it known that I, FRIEDRICH WANGELIN, a subject of the King of Saxony, residing at Dresden, in the Empire of Germany, have invented certain new and useful Improvements in or Relating to OlosingDeviees for theValves of W ater-Oisterns and the Like, (for which Letters Patent have been obtained in Austria, dated September 26, 1896, No. 46/3760; in Germany, dated April 30, 1896, No. 95,109; in Hungary, dated May 18, 1896, No. 6,288; in France, dated May 16, 1896, No. 256,393; in Belgium, dated May 18, 1896, No. 121,417; in Great Britain, dated May 12, 1896, No. 10,138, and in Switzerland, dated May 13, 1896, No. 12,498,) of which the following is a specification.

The present invention relates to a device for closing the inlet-valves of tanks for liquids, and is more particularly applicable to flushing-tanks for water-closets.

The object of the invention is to attain a slow and noiseless closing of the valves by opposing a balance-weight to the force effecting the opening and closing of the valve, whether the force be pressure of the liquid itself or a weighted lever, said balance-weight being in the form of a vessel which becomes lighter either by its contents being gradually discharged or by the counter-pressure of the liquid slowly rising in the tank surrounding said vessel.

In the closing devices employed hitherto, in which usually the opening and closing of the inlet-valve was effected by a ball which sank and rose as the level of the liquid in the tank sank and rose, there were many drawbacks, such as the sudden closing of the valve, the ball becoming leaky, so that the valve did not close in a perfect manner, or when the tank became leaky the valve opened automatically.

In the accompanying drawings, Figure 1 shows a tank in longitudinal section with the device in its closed position. Fig. 2 shows the tank in the act of being emptied and fresh water let in, the closing device being open. Fig. 3 shows the inlet-valve in longitudinal section, on an enlarged scale. The open position is indicated in dotted lines.

The box like tank a is provided with an outlet 1'), closed by a ball or other valve 0,

which can be operated from outside by a lever or chain dfor the purpose of quickly discharging the contents of the tank a.

The inlet-valve e is adapted to be kept closed by an adjustable screw-rod g carried by an arm g on a two-armed lever f, pivoted at g to an arm on the valve-casing, for instance. One end of the rod 9 is constantly in contact with one end of the valve-plug, as indicated more clearly in Fig. 3. When the lever f is in the position seen in full lines in said figure, the valve-plug is held in its inner or closed position to keep water from flowing into pipes l and m, and when the lever is tilted into the dotted-line position seen in Fig. 3 the valve plug is permitted to be pushed outwardly by the water owing to the end of the screw-rod having been tilted away from the end of the valve-plug, so that water can now flow into pipes land m to refill the tank and the vessel 70. At one end of the lever f there is attached a weight 71 and at the other end a vessel It. The liquid is discharged from the valve 0 through the pipe Z directly into the tank a and through the pipe 1%, leading from the valve, into the vessel It.

When the tank a is full and the valve e is closed, the lever f is in the position shown in Fig. 1. If by pulling on the cord or chain d the outlet-valve c is lifted, the contents of the tank a are quickly discharged and the full vessel 7t descends as the level of Water in the tank sinks, as under such conditions it is heavier than the weight It on the other end of the lever. The lever f is thus caused to turn and open the valve 6, so that liquid is admitted through the two pipes Z and m. The bottom of the vessel It is provided with one or more holes the total area of which is greater than that of the inlet-pipe m. As long as the bottom of the vessel 70 dips into the liquid it cannot become empty. If, however, the level of the liquid sinks, the vessel it begins to empty, the weight It thus gradually overbalaneing the lever, which slowly comes into position, Fig. 1, in which the valve is closed.

WVhen the tank (tis quite full of water, the valve e remains closed, for the vessel 7:; is overbalanced by weight It, and consequently the lever f occupies such position that the valve is closed. When the discharge-pipe b is opened by the valve 0 being raised, the

level of water becomes lower and the vessel 70 accordingly descends, so that the lever f occupies a different position, and thus opens the valve 6. If only a little water is discharged-that is to say, so much that the vessel 7c still dips in the waterthen the valve 6 will be open, and fresh water is again admitted through the pipe on. In winter, howeverfor instance, in water-closets-the valve 0 is left open till the tank a is quite empty in order to prevent the whole from becoming frozen.

The whole contents of the tank can be discharged owing to the apparatus being so arranged that when the valve 0 is open more water is discharged through it than is admitted through the pipes Z and on when the valve is open.

Vhen the level of water becomes so low that the vessel 7c no longerdips or is immersed in the water, the water contained in said vessel is discharged through the holes in the bottom of the Vessel 7a. The weight h draws down the lever f and closes the valve 6 Without producing any shocks. When the tank a is again to be filled, it becomes necessary to open the inlet 6 from the outside.

I claim 1. The combination with a tank, and a valved outlet therefor, of a lever pivoted intermediate its ends, a vessel carried by one arm of said lever, and provided with discharge-openings, a counterweight carried by the other arm of the lever, pipes adapted to discharge water into the said vessel and the tank, and a valve adapted to control the flow of water into said pipes, the vessel on the piv oted lever being adapted to be overbalanced by the counterweight when the said vessel dips within the water in the tank to maintain the inlet-valve closed, and being adapted to gradually overbalance the counterweight when the tank is discharging to thereby open the inlet-valve, and the said counterweight being adapted to again gradually overbalance the vessel as the same discharges its contents, to thereby gradually close the inlet-valve, all substantially as described,

2. The combination with a tank and a valved outlet therefor, of a lever f, pivoted intermediate its ends, a perforated vessel is, carried by one arm of the lever, a counterweight h, carried by the opposite arm of the lever, inlet-pipes Z and m, adapted to discharge water into the vessel and the tank, a valve arranged to control the admission of water into the pipes, an abutment carried by the pivoted lever and adapted to operate the valve to cutoff the flow of water to the pipes when the lever is tilted in one direction and to permit said valve to open under pressure of the water to admit the latter to the pipes when the lever is tilted in the opposite direction, all arranged for cooperation substantially as and for the purpose specified.

In witness whereof I have hereto set my hand in the presence of the two subscribing witnesses.

FRIEDRICH IVANGELIN.

\Vitnesses:

ALEXANDER SILBERSCHMIDT, FRITZ BERGER voN TENGERTE. 

